diff options
Diffstat (limited to 'vendor/github.com/dsoprea/go-jpeg-image-structure/v2/markers.go')
| -rw-r--r-- | vendor/github.com/dsoprea/go-jpeg-image-structure/v2/markers.go | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/vendor/github.com/dsoprea/go-jpeg-image-structure/v2/markers.go b/vendor/github.com/dsoprea/go-jpeg-image-structure/v2/markers.go new file mode 100644 index 000000000..a12171bd8 --- /dev/null +++ b/vendor/github.com/dsoprea/go-jpeg-image-structure/v2/markers.go @@ -0,0 +1,212 @@ +package jpegstructure + +import ( + "github.com/dsoprea/go-logging" +) + +const ( + // MARKER_SOI marker + MARKER_SOI = 0xd8 + + // MARKER_EOI marker + MARKER_EOI = 0xd9 + + // MARKER_SOS marker + MARKER_SOS = 0xda + + // MARKER_SOD marker + MARKER_SOD = 0x93 + + // MARKER_DQT marker + MARKER_DQT = 0xdb + + // MARKER_APP0 marker + MARKER_APP0 = 0xe0 + + // MARKER_APP1 marker + MARKER_APP1 = 0xe1 + + // MARKER_APP2 marker + MARKER_APP2 = 0xe2 + + // MARKER_APP3 marker + MARKER_APP3 = 0xe3 + + // MARKER_APP4 marker + MARKER_APP4 = 0xe4 + + // MARKER_APP5 marker + MARKER_APP5 = 0xe5 + + // MARKER_APP6 marker + MARKER_APP6 = 0xe6 + + // MARKER_APP7 marker + MARKER_APP7 = 0xe7 + + // MARKER_APP8 marker + MARKER_APP8 = 0xe8 + + // MARKER_APP10 marker + MARKER_APP10 = 0xea + + // MARKER_APP12 marker + MARKER_APP12 = 0xec + + // MARKER_APP13 marker + MARKER_APP13 = 0xed + + // MARKER_APP14 marker + MARKER_APP14 = 0xee + + // MARKER_APP15 marker + MARKER_APP15 = 0xef + + // MARKER_COM marker + MARKER_COM = 0xfe + + // MARKER_CME marker + MARKER_CME = 0x64 + + // MARKER_SIZ marker + MARKER_SIZ = 0x51 + + // MARKER_DHT marker + MARKER_DHT = 0xc4 + + // MARKER_JPG marker + MARKER_JPG = 0xc8 + + // MARKER_DAC marker + MARKER_DAC = 0xcc + + // MARKER_SOF0 marker + MARKER_SOF0 = 0xc0 + + // MARKER_SOF1 marker + MARKER_SOF1 = 0xc1 + + // MARKER_SOF2 marker + MARKER_SOF2 = 0xc2 + + // MARKER_SOF3 marker + MARKER_SOF3 = 0xc3 + + // MARKER_SOF5 marker + MARKER_SOF5 = 0xc5 + + // MARKER_SOF6 marker + MARKER_SOF6 = 0xc6 + + // MARKER_SOF7 marker + MARKER_SOF7 = 0xc7 + + // MARKER_SOF9 marker + MARKER_SOF9 = 0xc9 + + // MARKER_SOF10 marker + MARKER_SOF10 = 0xca + + // MARKER_SOF11 marker + MARKER_SOF11 = 0xcb + + // MARKER_SOF13 marker + MARKER_SOF13 = 0xcd + + // MARKER_SOF14 marker + MARKER_SOF14 = 0xce + + // MARKER_SOF15 marker + MARKER_SOF15 = 0xcf +) + +var ( + jpegLogger = log.NewLogger("jpegstructure.jpeg") + jpegMagicStandard = []byte{0xff, MARKER_SOI, 0xff} + jpegMagic2000 = []byte{0xff, 0x4f, 0xff} + + markerLen = map[byte]int{ + 0x00: 0, + 0x01: 0, + 0xd0: 0, + 0xd1: 0, + 0xd2: 0, + 0xd3: 0, + 0xd4: 0, + 0xd5: 0, + 0xd6: 0, + 0xd7: 0, + 0xd8: 0, + 0xd9: 0, + 0xda: 0, + + // J2C + 0x30: 0, + 0x31: 0, + 0x32: 0, + 0x33: 0, + 0x34: 0, + 0x35: 0, + 0x36: 0, + 0x37: 0, + 0x38: 0, + 0x39: 0, + 0x3a: 0, + 0x3b: 0, + 0x3c: 0, + 0x3d: 0, + 0x3e: 0, + 0x3f: 0, + 0x4f: 0, + 0x92: 0, + 0x93: 0, + + // J2C extensions + 0x74: 4, + 0x75: 4, + 0x77: 4, + } + + markerNames = map[byte]string{ + MARKER_SOI: "SOI", + MARKER_EOI: "EOI", + MARKER_SOS: "SOS", + MARKER_SOD: "SOD", + MARKER_DQT: "DQT", + MARKER_APP0: "APP0", + MARKER_APP1: "APP1", + MARKER_APP2: "APP2", + MARKER_APP3: "APP3", + MARKER_APP4: "APP4", + MARKER_APP5: "APP5", + MARKER_APP6: "APP6", + MARKER_APP7: "APP7", + MARKER_APP8: "APP8", + MARKER_APP10: "APP10", + MARKER_APP12: "APP12", + MARKER_APP13: "APP13", + MARKER_APP14: "APP14", + MARKER_APP15: "APP15", + MARKER_COM: "COM", + MARKER_CME: "CME", + MARKER_SIZ: "SIZ", + + MARKER_DHT: "DHT", + MARKER_JPG: "JPG", + MARKER_DAC: "DAC", + + MARKER_SOF0: "SOF0", + MARKER_SOF1: "SOF1", + MARKER_SOF2: "SOF2", + MARKER_SOF3: "SOF3", + MARKER_SOF5: "SOF5", + MARKER_SOF6: "SOF6", + MARKER_SOF7: "SOF7", + MARKER_SOF9: "SOF9", + MARKER_SOF10: "SOF10", + MARKER_SOF11: "SOF11", + MARKER_SOF13: "SOF13", + MARKER_SOF14: "SOF14", + MARKER_SOF15: "SOF15", + } +) |